来自丁淑艳的问题
用克莱姆法则解方程组2X1+2X2-5X3+X4=4X1+4X2-7X3+6X4=0X1-3X2-6X4=92X2-X3+2X4=-5(大括号打不出来)
用克莱姆法则解方程组
2X1+2X2-5X3+X4=4
X1+4X2-7X3+6X4=0
X1-3X2-6X4=9
2X2-X3+2X4=-5
(大括号打不出来)
1回答
2020-05-30 00:09